Change one-half of an acre to square inches

Your first step could be to look up how many square feet there are in 1 acre.  Use that as your first conversion factor, to change "1/2 acre" to "square feet."

Next, find and apply the conversion factor connecting square feet with square inches.

Google this:   1 acre = > ft^2

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20